HPI BLITZ owners can now adjust their gear ratio with a variety of precision molded nylon spur gears. Each gear has the tooth count molded in for easily identification. Must be used with Slipper Clutch Set #103377
#103371 SPUR GEAR 77 TOOTH (48 PITCH)
#103372 SPUR GEAR 83 TOOTH (48 PITCH)
#103373 SPUR GEAR 88 TOOTH (48 PITCH)